Combination-padlock.



L. L. KELLOGG.- GOMBINATION PADLOGK. urmouxon FILED 0013.31, 1902.

Patented Feb.1,1 910.

J ML 51% STAES FFICE.

LUKE IJ. KELLOGGr, OF FREDONIA, NEW YORK.

COMBINATION-PADLOCK.

Patented Feb. 1, 1910.

(Model) To all whom it may concern:

Be it known that I, LUKE L. KELLooo, a citizen of the United States,residing at Fredonia, in the county of Chautauqua and State of New York,have invented a new and useful Combination-Padlock, of which thefOllOWlDg is a specification.

The object of the invention is to obviate the necessity of taking apartthe lock when a change in the combination is desired, and also fully toconceal the tumblers at all times, thus to prevent any tampering with aview to securing the combination. Furthermore, to provide a padlockhaving the above characteristics, that shall be simple of construc tion,efficient and durable in use, and easy to manipulate when thecombination is known, but otherwise practically proof against picking.

With the above and other objects in view, as will appear as the natureof the invention is better understood, the same consists in the novelconstruction and combination of parts of a permutation padlock, as willbe hereinafter fully described and claimed.

In the accompanying drawings forming a partof this specification, and inwhich like characters of reference indicate correspond ing parts, Figure1 is a view in side elevation of a padlock constructed in accordancewith the present invention, the shackle being shown as unlocked. Fig. 2is a vertical transverse sectional view taken on the line 2-2 of Fig. 1,and looking in the direction of the arrow thereon. Figs. 3 to 7inclusive are perspective detail views of different parts of the lock.

The lock embodies a front shell member 1, a back shell member 2, ashackle guide 3, a shackle 1, constructed with a long leg 5 and a shortleg 6, two relatively fixed flat tumblers 7 and 8, and a loose dishedtumbler 9. The tumblers 7 and 8 are secured to the shell members 1 and 2by providing each of the latter with a hollow stud 10 and 11respectively, that enter centrally disposed orifices provided in thetumblers, and have their ends upset flush with the latter, as clearlyshown in Fig. 2. The bushing or upsetting of the studs will bind the twotumblers against the shell members with such tightness as to requireconsiderable force to turn the members independently of the tumblers,and this will prevent any accidental change i in the combination whichmight otherwise ensue. Each of the three tumblers is provided with anopen-sided radial slot designated respectively 12, 13 and 14, and theshackle guide is provided with a closedended radial slot 15, designed toregister with the three other slots when the tumblers are in position torelease the shackle, as shown in Fig. 2, and with a centrally disposedhollow stud 16 against which the loose tumbler bears. The shell membersand shackle-guide are cupped structures, and the rims 17 and 18 of theshell members project outward from their body portions a distance equalto the thickness of the tumblers 7 and 8, while the rim 19 of theshackle guide projects outward from its body portion a distance slightlygreater than the thickness of the shackle, and is provided with twoguides or recesses 20 and 21 in which freely work the legs of theshackle.

All three of the tumblers are of the same diameter, and theirperipheries are spaced at such distance from the rims of the shellmembers and of the shackle-guide as to provide annular channels 22 and23 to receive the tumbler-locking pin 241 of the shackle, which iscarried by an angular extension 25 at the free end of the long legthereof. The pin also serves to limit the rotation of the loose tumblerby co-action with a finger 26 projecting from the periphery thereof,fora purpose that will be described hereinafter.

The shell members, shackle guide, shackle and loose tumbler, are allheld assembled by a spindle 27, the ends of which extend beyond theouter faces of the shell members and are upset and carry dishedresilient washers 28 that bear against the members with sufficient forceto prevent their turning too easily.

The front shell member is provided on its outer face with combinationnumerals ranged from zero or naught to twentyeight in steps of four, andits rim 17 is provided with regularly spaced notches or indices 29corresponding in number to, and co-acting with similar indices 30 on theshackle guide, while the rim 18 of the back shell is provided with asingle index 31 co-acting with the indices of the shackle guide and thefront shell member.

To change the combination, say, for example, from 4-20-28 to 0-16-10,the shackle is moved to unlocked position, as shown in Figs. 1 and 2,and when thus shifted, all of the tumblers are positively locked or heldagainst movement. The front shell member is now turned to bring naughtopposite the index 32 between the guides 20 and 21 in the shackle guiderim, and this changes the combination of the front shell members to zeroand 16, these two numbers 7 being diametrically alined, and thisselection in the arrangement of the numbers will always have to beobserved, owing to the fact that the loose tumbler is moved onl onehalfa turn. The back shell member 18 now turned to bring the index 31 intoalinement with the index on the front shell indicating 10, and thiscompletes the setting of the combination. Then the shackle is pushed in,and the shell members turned, the combination is broken.

To unlock, turn the front shell member twice to the left and stop at 16opposite the index 32 on the rim of the shackle guide. This operationturns the loose tumbler and brings its finger 26 into engagement withthe tumbler locking pin which holds it against further movement. Thefront shell member is now turned to the right one half a rotation tobring naught opposite the index 32, and finally the back shell member isturned to bring the index 31 opposite 10 on the front shell, and thiswill bring all of the tumbler slots into register, whereupon the shacklemay be withdrawn.

By slightly dishing the tumbler 9 there I will be sufficient frictionalcontact between it and the tumbler 8 to cause the latter to turn theformer in the manner described.

that is claimed is:

1. A permutation padlock comprising cupped shell members, radiallyslotted frictionally restrained rotatable tumblers carried by themembers and of less diameter than the same to provide annular channelswith which the slots communicate, a shackle guide disposed between themembers and provided with a radial slot, a radially slotted loosetumbler furnished with a peripheral finger in approximate alinement withits slot, a shackle mounted in the guide and provided with atumbler-locking pin to engage all of the slots and the finger, and meansfor holding all of the parts assembled. g

2. A permutation padlock comprising cupped shell members, radiallyslotted frictionally restrained rotatable tumblers carried by the shellmembers and of less diameter than the same to provide annular channelswith which the slots communicate, a shackle guide disposed between theshell members and provided with a radial slot, a shackle mounted in theguide and arranged to engage all of the slots, and means for holding allof the parts assembled.

3. A permutation padlock comprising shell members, radially slottedrotatable tumblers, hollow studs frietionally uniting the shell membersand the tumblers whereby the shell members may be rotated either withthe tumblers or independently thereof, a radially slotted shackle guidelocated between the shell members, a shackle slidably mounted in theguide and arranged to engage the slot of the guide and to engage theslots of the tumblers to prevent rotation and to be held by saidtumblers in locked position, and means for holding all of the partsassembled.

at. A permutation padlock comprising shell members, radially slottedrotatable tumblers, hollow studs frictionally uniting the shell membersand the tumblers whereby the shell members may be rotated either withthe tumblers or independently thereof, a radially slotted shackle guidelocated between the shell members, a shackle slidably mounted in theguide and arranged to engage the slot of the guide and to engage theslots of the tumblers to prevent rotation and to be held by saidtumblers in locked position, and a spindle terminally mounted in thehollow studs.

5. A permutation pad-lock comprising shell members, radially slottedfrictionally restrained rotatable tumblers carried by the shell members,a shackle guide disposed between the members and provided with a radialslot, a radially slotted loose tumbler having a peripheral finger inapproximate alinement with its slot, a shackle mounted in the guide andarranged to enga e all of the slots and the finger, and means forholding all of the parts assembled.

6. A permutation pad lock comprising shell members, radially slottedrotatable tumblers, hollow studs frictionally uniting the tumblers withthe shell members, a shackle guide disposed between the shell membersand provided with a radial slot, a radially slotted loose tumblerprovided with a pcripheral finger in approximate alinement with itsslot, a shackle mounted in the guide and arranged to engage all of theslots and the finger, and means for holding all of the parts assembled.

7. A permutation pad-lock comprising shell members, radially slottedrotatable tumblers, hollow studs frictionally uniting the tumblers withthe shell members, a shackle guide disposed between the shell membersand provided with a radial slot, a radially the finger and a spindleterminally asslotted loose tumbler provided with a peripheral finger inapproximate alinement with its slot, a shackle mounted in the guide andarranged to engage all of the slots and LUKE L. KELLOGG.

Witnesses:

DOUGLAS O. ADAMS, MARSHALL H. SHANNON.

sembled with the studs.

In testimony that I claim the foregoing

